12"
VENT PIPE
VENT CAP
INTAKE
VENT
36" MIN.
INTAKE
VENT
COMBUSTION AIR
FILTER
6"
BOILER
UNIT
12" MIN.
Fig. 20: Direct Vent Horizontal
|
| Certified |
| Max. | Combustion | Air Inlet | Max. Air | |
Model | Appliance | Vent Size | Venting | Air Intake | Intake | |||
Venting | Size | |||||||
No. | Category | (inches) | Length | Pipe | Length | |||
Material | (inches) | |||||||
|
|
| (feet) | Material | (feet) | |||
|
|
|
|
| ||||
|
|
|
|
|
|
|
| |
122 |
|
| 4 | 40 |
|
| 40 | |
|
|
|
| Galvanized |
| |||
162 |
| Stainless |
| Subtract 10 |
| Subtract 10 | ||
|
| Steel |
| |||||
|
| ft per |
| ft per | ||||
202 | III | Steel | 5 | PVC | 5 | |||
elbow, | elbow, | |||||||
242 |
| (Gas Tight) |
| ABS |
| |||
|
| Max. two |
| Max. two | ||||
|
|
|
| CPVC |
| |||
|
|
|
| elbows |
| elbows | ||
322 |
|
| 6 |
|
| |||
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
Table L: Horizontal
29
